I think that the SIM cards are different for the different providers--one won't fit into the slot for the other. I'm probably wrong about that, but it's in my memory bank somewhere that that's the way it works.

I don't know what T-Mobile offers for $50 month but ATT has a $60 a month plan that gives unlimited text and voice, 2G data, and a much larger network. I'm going to drop my land line.

As far as SIM cards, better Google the limitations. It's kind of complicated switching. The 5's can be used on other networks, with limitations. Verizon uses CDMA, ATT and T-Mobile GSM. Something about the LTE not being compatible though. You will have to get the phone unlocked too to use on both.

Freakin' Apple.I've looked into cheap, and will still pay more than I want to, so I figured, WTH.I've been a good boy, held off for as long as I could, I DESERVE nothing but the best, right? I said, RIGHT?

About the Unlocked iPhoneThe unlocked iPhone includes all the features of iPhone but without a wireless contract commitment. You can activate and use the unlocked iPhone on the supported GSM wireless network of your choice, such as AT&T or T-Mobile in the United States. The unlocked iPhone will not work with CDMA-based carriers, including Sprint and Verizon Wireless.If you don’t want a multiyear service contract, or if you prefer to use a local carrier when traveling abroad, the unlocked iPhone is the best choice. If you choose T-Mobile, your iPhone comes with a T-Mobile SIM card already installed. You will need to contact T-Mobile or visit an Apple Retail Store to activate your iPhone.Otherwise, the unlocked iPhone does not come with a micro-SIM card for iPhone 4s, or a nano-SIM card for iPhone 5c so you’ll need to get one from any supported GSM carrier worldwide. To start using your iPhone, simply insert the SIM card into the slot and turn on iPhone by pressing and holding the On/Off button for a few seconds. Then follow the onscreen instructions to set up your iPhone.Purchasing an unlocked iPhone means you will not qualify for the lower iPhone price associated with a contract. The unlocked iPhone 5c model is A1532 (GSM). The unlocked iPhone 5s model is A1533 (GSM).

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